My pet is revoked on spawn

This is issue is usually caused after you change the language.yml file.

The reason to that issue is that both the interaction menu and the main menu to spawn your pets have the same name in the language.yml file. (see example below)

Both menus share the same name in the language.yml file

Easy fix is to have different names for both menu. Change them within the language.yml file, save it, then restart your server. The bug should be fixed.

Both menus have to share different names

As of now, it is considered as a limitation of the plugin to be enhanced. However, I didn't find a way to make it work without using different names for now.